The miner will have to look after the whole system if he is working in a hot region if they are going to heat up.It is better for miners to plant their system in cold weather or snowy region where we do have not to face processor heating up problems. More is that you have to solve blocks that you are connecting in a mining pool. you have to confirm valid transactions that your miner hashing away.
In most of asian countries mining is not a commercially viable option because the mercury goes above 40C , with such warm weather condition Air cooling system is a must to to avoid over heating of electrical devices.and cost of electricity is skyrocketing due to increase in fuel price. The only workable solution is Solar panels as sunlight duration during all weathers is more than 10 Hrs/day which is quite sufficient . Solar system need one time huge investment but it will continue supplying electricity at zero dollar cost for many decades.